{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "Twenty patients received 27 courses of ifosfamide administered as a 24 - hour continuous infusion for 14 days without Mesna ."}
{"Chemical": ["ifosfamide", "Mesna"], "Disease": []}